Introducing ADDAC803 Quadraphonic Spatializer

New Interfaces for Analog Synthesizers.

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Metamusik
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Introducing ADDAC803 Quadraphonic Spatializer

Post by Metamusik » Mon Jun 25, 2012 8:19 am

I'm starting to get more and more into some serious EAM, Concrete etc. and this module looks like the next logical step, Quadra more or less being the standard for electronic compositions since Stockhausen.

I'm eagerly awaiting it and I was wondering if anyone has any idea of how the development is going.
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__ag
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Post by __ag » Mon Jun 25, 2012 8:32 am

Hello,

Although the module development is completely finished and the reactions to this module were very positive i had very few inquires for it and never took the step to make a first batch!

i'm still offering the "beta user" discount for this one,
so if a few people step in i'll get it rolling!

all the very best
andre

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Post by Metamusik » Mon Jun 25, 2012 9:00 am

Sure, I'm interested. Do you have any specs and what not? Right now I'm waiting for a bigger case but if the only way the module will see the light of day is to join the beta, then that's what I'll do.
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cyklopljud
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Post by cyklopljud » Mon Jun 25, 2012 10:59 am

I'm interested, any more specs?

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__ag
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Post by __ag » Mon Jun 25, 2012 11:29 am

Hello!

About ADDAC803 specs:
This is a hybrid module where all the algorithm is running on a digital MCU while all the audio path is fully analog.

4 High quality VCA's are used to route the necessary audio amplitude to each of the channels independently, meaning that each VCA CV input is connected to the digital side being controlled by the algorithm.

The algorithm is based on the VBPA concept (Vector Based Amplitude Panning) this is the most common algorithm behind most digital spatialization techniques applied to 4 fixed position outputs (speakers).
googling this will show many sources of info, here's a detailed academic paper:
http://lib.tkk.fi/Diss/2001/isbn9512255324/article1.pdf


Features:
Polar and cartesian modes.

double stereo to be used as a double panner.

4 CV outputs with the algorithm outputs. These are buffers of the same CVs that are used to control the VCA's. 0 to +5v

2 CV outputs with X & Y position or radius & angle, 0 to +5v
depending on the polar or cartesian setting, if polar these 2 CV's will output the cartesian values and vice-versa.
So they work as polar to cartesian converter and vice-versa:


2 extra CV outputs, titled "Filter" + & - , normal and inverted to be used for series filtering or reverb addition depending on the defined position ( ex. the further the sound source is from the center: the more reverb would to be applied; or lowers a lowpass filter frequency) This increases the perception of a distant sound.

hope this helps!

any other particular question?

all the very best
andre


an updated from panel below:
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Post by Paranormal Patroler » Sun Jul 15, 2012 1:49 pm

Andre, I'd also be interested in beta testing. Would you be so kind as to tell me more about this procedure?

Also, beta testing this module => need at least four monitors, right? :help:

Plus, how much HP is this?
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Post by letitbleep » Sat Jul 21, 2012 6:58 pm

im pretty new to the modular world, and my system is still in it's beginning stages, but i am super interested in this module, in fact im sort of planning the development of the rest of my system around it, so i'd love to do whatever i can to bring it to life.

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Post by Paranormal Patroler » Wed Aug 22, 2012 5:30 am

:hyper: It's getting closer now. Any one else getting one of these?
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beyourdog
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Post by beyourdog » Wed Aug 22, 2012 6:24 am

Interesting, that s exactly the module i wanted to make 2 years ago, I sent it to our tech who was not too hot about it...
...though it included a joystick as well for direct handling of the quadraphonie...

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Post by Paranormal Patroler » Wed Aug 22, 2012 6:27 am

The space reserved for it is right next to my Choices joystick. :tu:
It's so obvious, you just cannot avoid trying it out.

I'm quite curious about the CV out for the reverb though. That's another obvious thing to try out as well.
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Post by sandyb » Wed Aug 22, 2012 1:30 pm

Paranormal Patroler wrote::hyper: It's getting closer now. Any one else getting one of these?
yup!

looking forward to it.

i do need to get 2 more speakers to utilise it fully but i think it will be a really useful module in a 2 speaker setup anyway.

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Post by Paranormal Patroler » Wed Aug 22, 2012 1:44 pm

I have been pondering on the same vain myself; what use does a quad panning have if not as a stepping stone to acquiring a four speaker setup?
Thankfully it doubles up as a duo stereo panner as well.

Have you any idea of the workings of some of the weirder aspects of the module? I am referring to the settings/cv outs/ filter outs. To be honest, their use eludes me.

On the other hand, I have been fighting my ignorance in regards of the use of a typical stereo console in a quad speaker system. Let me know if you (or anyone else for that matter) is interested in discussing this subject further, as it surely will come in handy.
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Post by bj_gzp » Tue Sep 04, 2012 6:38 pm

I'll get one to replace my VCAmatrix.
I'll abuse it for FX routing (these filter +/- outs sold me) and it's nice to have in case i should ever get a chance to rock on a quadrophonic system...
Cheers,
Björn

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Post by Paranormal Patroler » Wed Sep 05, 2012 5:00 am

bj_gzp wrote:I'll get one to replace my VCAmatrix.
I'll abuse it for FX routing (these filter +/- outs sold me) and it's nice to have in case i should ever get a chance to rock on a quadrophonic system...
Cheers,
Björn
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Post by __ag » Thu Sep 06, 2012 4:28 am

Hello all,

Some news about the ADDAC803,
Glad to tell that the 1st prototype is up and running!
hoping that in 4-6 weeks the first pre-orders will be finished!

http://addacsystem.com/product/addac800 ... patializer

all the very best


andreImage

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Post by bj_gzp » Thu Sep 06, 2012 4:33 am

:sb: :bacon:
Another beauty for my audio mixing skiff :love:
BJ

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Post by Paranormal Patroler » Thu Sep 06, 2012 5:26 am

:party: :party: :party:
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Post by KNYST » Thu Sep 06, 2012 8:21 am

FUCK! :sb: :yay:
NOISE HEALS.
patch responsibly.
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Post by Noha » Thu Sep 06, 2012 11:19 am

I've worked with spatialized sound in MAX/MSP and this module is very exciting! However I can't tell what some of the outputs are used for. How are CV Outs 1-4, X/Y CV Outs and Filter +- used? Is there a manual or a description anywhere? I can't find it on the website link.

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Post by Paranormal Patroler » Thu Sep 06, 2012 11:22 am

Noha wrote:I've worked with spatialized sound in MAX/MSP and this module is very exciting! However I can't tell what some of the outputs are used for. How are CV Outs 1-4, X/Y CV Outs and Filter +- used? Is there a manual or a description anywhere? I can't find it on the website link.
Check the fourth post from the top by Andre. He explains a few things.

PS: is that your photo in your avatar?
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Post by Noha » Thu Sep 06, 2012 11:44 am

ah yes! just the info I was looking for, thanks. my glasses must have obscured the view. this module looks excellent, I now desire one immensely. are you aware of what CVs the Filter +- output? It says they are "extra." Are they tied to the room size or X/Y? It still seems unclear.

and yes, the avatar photo is a self portrait :nod:

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Post by Paranormal Patroler » Thu Sep 06, 2012 11:50 am

Noha wrote:ah yes! just the info I was looking for, thanks. my glasses must have obscured the view. this module looks excellent, I now desire one immensely. are you aware of what CVs the Filter +- output? It says they are "extra." Are they tied to the room size or X/Y? It still seems unclear.
2 extra CV outputs, titled "Filter" + & - , normal and inverted to be used for series filtering or reverb addition depending on the defined position ( ex. the further the sound source is from the center: the more reverb would to be applied; or lowers a lowpass filter frequency) This increases the perception of a distant sound.

I'd guess they're tied to both the position and the room size. But that probably depends on the algorithm and I haven't read up on that yet. There are other stuff I haven't figured out yet (like the 4 1/4'' channel outputs) but I guess we need a manual for that.
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Post by Noha » Thu Sep 06, 2012 12:06 pm

Paranormal Patroler wrote: I'd guess they're tied to both the position and the room size. But that probably depends on the algorithm and I haven't read up on that yet. There are other stuff I haven't figured out yet (like the 4 1/4'' channel outputs) but I guess we need a manual for that.
totes. we are just guessing about this stuff at this point. my guess on the 1/4" speaker outputs is that they are a balanced (hopefully!) copy of the 1/8" speaker outputs, like on the size matters module, to facilitate direct interfacing with a quad speaker system.

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Post by Paranormal Patroler » Thu Sep 06, 2012 12:09 pm

Noha wrote: totes. we are just guessing about this stuff at this point. my guess on the 1/4" speaker outputs is that they are a balanced (hopefully!) copy of the 1/8" speaker outputs, like on the size matters module, to facilitate direct interfacing with a quad speaker system.
Yeah, sorry, I meant to write 1/8". The 1/4" are obviously there to output the signal to the console/speakers. So the 1/8" must be there to get the signal onto the reverbs/delays possibly? I don't see no send/return options otherwise.

edit

no, scratch that. Those must be mults of the 1/4" outs to root your signal to other modules. No returns. I wonder what the intended use of the filter outs are with no returns from the reverbs. I guess that you use the out of the 1/8" to get the sound on the reverb module and the +filter out to the reverb CV in. Whereas the -filter is there for the CV in of the cutoff filter.
So it all pertains to what the algorithm does exactly...
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Post by bj_gzp » Thu Sep 06, 2012 12:44 pm

As far as i understood the 1/4" jacks are not balanced! I think the difference between the 1/4" and 1/8" jacks will be the levels (line vs modular).
Not sure about the CV outs, but intuitively i would say they are correlated to the signal strength being routed to the 4 outs respectively.
On the filter outs, i can imagine several applications, but it depends highly on the actual patch.
For ex routing the outs into 2 vermona reverb units (to cover all channels) and then modulate the filter cut...

CHeers,
BJ

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